Cutter for roll-holders.



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Inventor. m

I Attorney.

UNTTnD STATES PATENT QFFICE.

.VILLIAM B. PURVIS, OF PHILADELPHIA, PENNSYLVANIA.

CUTTER FOR ROLL-HOLDERS.

SPECIFICATION forming part of Letters Patent No. 630,267, dated August1, 1899.

Application filed August 23, 1898.

T0 (0 whom it may concern:

Be it known that 1, WILLIAM B. PURVIS, of the city and county ofPhiladelphia, in the State of Pennsylvania, have invented an Improvement in Paper-Cutting Devices,of which the following is aspecification.

My invention relates to paper-cutting devices; and it consists of theimprovements which are fully set forth in the following specificationand are shown in the accompanying drawings.

It is the object of my invention to provide an improved construction inpaper=cutting devices for enabling a free projecting flap to be formedon the edge of the paper 'when the sheet is cut off and to be supportedat an elevation, so that it may be readily seized by the hand withoutthe necessity of lifting the cutter-bar or turning the roll to move thepaper forward and at the same time to avoid the imposition of additionalfriction on the paper.

In carrying out my invention I employ a longitudinal cutter-bar providedat its ends with inwardly-directed flanges in which is journaled alongitudinally-arranged roller resting on the surface of the paper andholding the cutting edge of the cutter-barelevated at a substantialdistance in front of the roller, with a longitudinal supporting-wirecarried by the flanges of the cutter-bar between the roller and cuttingedge. The roller is maintained in contact with the surface of the paperby a spring device acting on the cutterbar. a

In the accompanying drawings, Figure 1 is a transverse verticalsectional view of a paper-cutter embodying myinvention, and Fig. 2 is afront elevation of the same.

B is a quantity of paper in a continuous web, shown as a roll supportedupon a suitable frame A by a shaft 1) with freedom to turn.

0 is the longitudinal cutter-bar, which may be supported from the frameA in any convenient manner with provision to follow the paper as itsquantity is reduced. I have shown it supported by arms D, with springs dacting therein and tending to hold the cutter-bar at all times firmly onthe surface of the paper.

It may, however, be supported in any other convenient manner, as byrigid arms, and held in contact with the paper by gravity.

E is the cutting edge of the cutter O, which is held off from thesurface of the paper by a support or supports F, so that the cuttingedge will at all times be maintained at a substantial distance from thesurface of the paper and from the support which rests in contacttherewith. In the construction shown the support F consists of alongitudinal rod or roller journaled in side flanges f f of the cutterO. The support F rests directly upon the outer surface of the paper,which passes under it, and when the paper is pulled out to the desiredextent and pulled upward in contact with the cutter C in the usualmanner it will be cut off by the cutting edge E at a point distant fromthe point of support F, leaving at all times a free edge at equal inlength to the distance of the support F from the cutting edge E, whichmay readily be seized by the hand to pull out the paper to cut off thenext sheet without the necessity of lifting the cutter-bar C or rotatingthe pa per-roll.

G is a flap-support located immediately in front of the support F, overwhich the paper passes and by which the flap is held raised from thebody of the paper, so thatit may be more readily seized. In my preferredconstruction this flap-support consists of a longitudinal wire havingits ends bent and engaging the flanges ff.

It will be noted that the support F rests directly upon the surface ofthe paper, which passes under it, and that the free flap or edge a: doesnot pass between any guides or plates, and the paper is therefore notsubjected to any undue friction when drawn out which would be liable totear it. The flap also rests loosely upon the flap-support G above thesurface of the roll simply as the free exposed end, so that it may beeasily seized by the fingers and the sheet drawn out without anyadditional resistance or friction.

The minor details of construction may of course be varied withoutdeparting from the invention.

lVhat I claim as new, and desire to secure by Letters Patent, is asfollows:

In a paper-cutting device, the combination of a longitudinal cutter-barhaving a cutting cutting edge, and a spring device acting upon edge andprovided at its ends with inwardlysaid cutter bar to hold said roller Fin condirected flanges, a longitudinal roller F jourtact with thesurface of the paper.

naled in said inwardly-directed flanges of the In testimony of Whichinvention I hereunto 5 cutter-bar at a substantial distance in the setmy hand.

rear of the cutting edge thereof and adapted to rest upon the surface ofthe roll of paper to be cut, a flap-supporting wire G carried byWitnesses: the flanges of the cutter-bar and extending D. C. GIBBONEY,1o longitudinally between the roller F and the WM. W. EVANS.

NVILLIAM B. PURVIS.

